### What this PR does / why we need it?
In the pcp full graph Qwen model scenario, the inconsistency between the
Q shape and actual q len of the FIA operator is fixed.
### Does this PR introduce _any_ user-facing change?
No
### How was this patch tested?
- vLLM version: v0.13.0
- vLLM main:
2c24bc6996
Signed-off-by: weiguihua2 <weiguihua2@huawei.com>